@Override
protected void initializeRasterReader(
int width, int height, int bitsPerSample, RasterReader rasterReader) {
IFD rasterIFD = ((TIFFMetadataSupport) metadata).getRasterIFD();
rasterReader.setWidth(width);
rasterReader.setHeight(height);
rasterReader.setBitsPerSample(bitsPerSample);
// if (rasterReader instanceof Gray12RasterReader) {
// IFD primaryIFD = ((TIFFMetadataSupport) metadata).getPrimaryIFD();
// ((Gray12RasterReader) rasterReader).setStripsOffset(primaryIFD.getStripOffsets());
// }
if ((rasterIFD != null) && rasterIFD.isCompressionAvailable()) {
rasterReader.setCompression(rasterIFD.getCompression().intValue());
}
if ((rasterIFD != null) && rasterIFD.isStripByteCountsAvailable()) {
rasterReader.setStripByteCount(rasterIFD.getStripByteCounts());
}
if ((rasterIFD != null) && rasterIFD.isTileWidthAvailable()) {
int imageWidth = rasterIFD.getImageWidth();
int imageLength = rasterIFD.getImageLength();
int tileWidth = rasterIFD.getTileWidth();
int tileLength = rasterIFD.getTileLength();
rasterReader.setTileWidth(tileWidth);
rasterReader.setTileHeight(tileLength);
rasterReader.setTilesAcross((imageWidth + tileWidth - 1) / tileWidth);
rasterReader.setTilesDown((imageLength + tileLength - 1) / tileLength);
rasterReader.setTileOffsets(rasterIFD.getTileOffsets());
// int[] tileByteCounts = imageIFD.getTileByteCounts();
}
}
@Override
protected WritableRaster loadRAWRaster() throws IOException {
final IFD rasterIFD = ((TIFFMetadataSupport) metadata).getPrimaryIFD();
final RasterReader rasterReader = new Grey12RasterReader();
final int width = rasterIFD.getImageWidth();
final int height = rasterIFD.getImageLength();
final int bitsPerSample = rasterIFD.getBitsPerSample()[0];
initializeRasterReader(width, height, bitsPerSample, rasterReader);
if (!rasterIFD.isTileWidthAvailable()) {
iis.seek(
rasterIFD.getStripOffsets()); // FIXME: move, it's responsibility of the rreader to seek
}
final WritableRaster raster = rasterReader.loadRaster(iis, this);
return raster;
}